Difference in Tablespace Size Values From dba_data_files and dba_tablespace_usage_metrics/V$Filespace_usage
(Doc ID 455715.1)
Last updated on MARCH 31, 2024
Applies to:
Oracle Database - Enterprise Edition - Version 10.1.0.2 to 12.1.0.2 [Release 10.1 to 12.1]Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.
Symptoms
Tablespace size values differ when checked from DBA_DATA_FILES and DBA_TABLESPACE_USAGE_METRICS /V$FILESPACE_USAGE
The example shows data for a tablespace with a 16k block size.
In this case, there is a 3.9GB difference in the values reported from both views.
Cause
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